Roof construction.



J. 0. WHITE.

ROOF CONSTRUCTION.

APPLICATION FILED APR.18,1911.

Patented Nov. 19, 1912.

2 SHIEETS-SHEET 1.

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0. WHITE. ROOF CONSTRUCTION.

APPLICATION FILED APR.13,1911.

Patented Nov. 19, 1912.

2 SHEETSSHBBT 2.

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means of nails 12, which larger scale,

roan" c. wines, or rnnianaronrs, INDIANA, ASSIGNOR o one hair re rnnniinica a. Hermann, or inpranarenis, Iranians.

Efitlll GQNSTRUCTIGN.

specification of Letters Patent.

Patented Nov. re. rare.

Application filed hpriltl, i911. denial no. $220,938.

out of a plastic material, generally contain" ing cement and plaster of Paris-which sets and hardens or can be hardened by mechanical process in itsiinal position on the job.

The object of my invention is to provide a substitute for wood, metal and other shin gles, which will befless expensive and more durable, and easily applied to the roof; also to allow for expansion and contraction in and to permit such a root without breaking, of easy repairs when same are required.

l accomplish the objects of the invention by the mechanism illustrated in the accompanying drawings, in which Figure l. is a plan View or part of a roof partially covered with my improved plastic sectionalcovering and illustrating the mannor in which the sections are applied. F g. 2 is a vertical section on the line 2-2 of Fig. 1. Fig. 3 is a transverse section on the line 3-3 of Fig. 1. Fig. i is asection, on a taken on the line H of Fig. 1. Fig. 5 is a plan view and Fig. 6 a side elevation of a molding frame used in forming" the under sections. Fig. 7 is a modified form of this frame for making a section of increasing thichiess from-top to bottom, and Fig. 8 is a side elevation of a frame used in forming a narrower section which overlaps the adjacent vertical row of under sections. Like characters of reference indicate like parts through the several views of the drawings.

10 are the rafters, and 11 the wooden sheathing, of usual construction, of a roof to be covered with-my improved sections. The sections are held to the sheathing 11 by are driven firmly into the boards, but leaving their heads which are large and flat, projecting ap proximately three-eighths of an inch above. Before the sections. are formed the nails,

driven as above described, have their heads head v low the section to covered with sheet metal slides 18. These slides are formed out of rectangular sheet metal strips, generallyztin', which are bent transversely at.- a distance from one end somewhat less than the distance oiithe. head above the sheathing (see Fig. i), thence upwardly to pass the head, thence inwardly to cross above the head, thence. downwardly, thence inwardly below body ofthe nail to is large enough to receive the nail head but the portion communicating therewith is reduced to prevent the withdrawal a longitudinal movement of the nail. lhese slides have the material of the sections molded around them and they alslide on the nail during expansion and contraction.

The sections are preferably in two general of the nail:

be head and thence. downwardly close to the form a channehthe inner portion or which sizes, the lower and wider ones 15, and the upper and narrower ones 16, which overlap at the lower edge of the roof and each upper section overlaps the end of the next one below it. Every section that is overlapped has its overlapped edge provided with an upwardly projected out of the material of the section during the operation of forming. the latter, and the overlapping section has a corresponding underside channel to receive said rib.

Fig. 1 illustrates the manner of starting to lay a roof with my improved sections. The first operation is preferably to cover the sheathing-boards with building paper 19 or other fibrous material to keep the cement from entering cracks and other indents which would interfere with the free ad-' justment of the sections. The two vertical rows of sections 15 are next made by the aid of the forms illustrated in Figs. 5, 6, and 7 which are placed in position on the sheathing boards and filled with the plastic material which afterward hardens into a section. After the first two vertical rows are finished, they are connected by means of the overlying rows of sections 16 which are shaped by the aid of the form illustrated in Fig. 8. Then a new row of sections 15 is made, followed by an upper row 16 and this is repeated until the whole area of the rib 17, which is molded l the side edges pf the lower ones. All of the sectionsare laid in vertical rows beginning ping material is applied.

noeaeia roof is covered. It is important that each in order that thej may have independent movement to keep them from cracking expansion and contraction with changes in tern erature and as the sheathing boards swe l and shrink. This separation, I secure by laying strips of properly prepared fibrous material 20 upon each of the-flanged edges to be overlapped, before the overlap The fibrous material prevents theadherence oi the newly formed sections to each other and as previously stated, permits the sections to expand and contract on the above described fastenings, each independently of the other. In practice, I have found it to be prefertion, what I claim as new and wish to secure by Letters Patent of the United States, ;1s

A roof covered with sheathing boards, plastic material in sections applied to the boards in spaced-apart vertical rows, other vertical rows filling the space between said first rows and overlapping the vertical edges of the latter, the upper edges of all lower sections being overlapped by the next section above in its row, all overlapped lges having marginal upper ribs, paper separating the overlapped portions of said sections, and means for adjustably securing the sections to the sheathing boards to allow for individual expansion and contraction of'the sections.

In witness whereof, I, have hereunto set my hand and seal at Indianapolis, Indiana, this 3rd day of April,-A. D. one thousand able to double the fibrous material by using nine hundred and eleven.

two thicknesses together whereby a suficient air space results between the two which prevents the cement frorn adhering to each other.

Having thus portions thus separateda fully described my inven-i JOHN c. WHITE. 1. s]

Witnesses: v

F. W. Worenns. J. A. Mrn'ronn. 

